Well sorry to olly H as i have not seen him drive,but i still would put money on olly TB,as i have seen his driving skill,he's good and that astra is fast with really really good handling,i think the astra is better suted to the engin,as they built to take a big engine like that..
Where i know my self the nova just was not ment for it,even when you get a nova with a C20XE in it's still not going to handle great if you put the best susspension set up money could buy,the engine sits to far forward over the axis,making understeer a problem,when you look at a small block engine such as jims,or dans you see they sit perfect with the main wieght sat dead center at point of axis..
Some times i wonder if i made the right choice,and i think i would use a c16xe if i could do it again,just to get better handling,but for power,to the amount it coast's the C20xe is best..
Scott